Incandescent mantle



May 16, '1939 H. RlNNMAN INGANDESGENT MANTLE Filed March l1, 1957 Inventor a zZ/)mman I V A Home ys Patented May 16, 1939 UNITED:v STAT-LES 1- PATENT oFl-iet;-

INC'ANDE-SCEN'Il MANTLE Harry Rinnmam. Berwyn, Ill., assigner. to..,Uni.-

versal Mantle'nlnc., Brookeld,.1ll.; av corporation of Illinois ApplicationV March -11,

2 Claims.

'Ihisinvention relatesto that class of. illuminating and f gas` appliances andl accessories grouped under the heading of incandescent mantles, and it has morespecic. reference -towhat .1 is `vbelieved to be anew andwimproved base and4 hood-type mantle is of` such -a fabrication `as-to y be comparatively fragile and therefore too-deli cate to withstand careless handlingoradverse I appreciate, of course-that flame conditions. Si there are many different-types of supports and mantles on the market. Thus,l in reducing the principles of the present inventive conception to practice, I have been inspired with. the feeling that it is-neverthelesspossible in this already'v well developed art to provide-certain refirie-` ments and` improvements such as will constitute an advance in the art and trade.

In reducing to practice my conception, I have evolved and produced an arrangement characterized by an expansible and contractible split annulus constituting a base ring and providing an ingenious support and adapter for an inverted U-shaped frame having a suspension hook on which the mantle is detachably supported.

It follows, therefore, that my primary aim is to generally improve upon assemblies of this type by providing an arrangement which is especially adaptable for use in connection with 5 kerosene mantle lamps of the more modern type in use today, this being accomplished through the adoption and use of the adjustable annulus susceptible of being associated with existing equipment on the majority of different lamp constructions, whereby to provide an arrangement having universal characteristics.

Other features and advantages will become more readily apparent from the following description and drawing.

In the drawing:

Figure 1 is an elevational view of an invention embodying the improvements and refinements hereinafter specifically claimed.

Figure 2 is a View at right angles to Figure 1 with portions broken away and shown in section to detail the arrangement for more satisfactory study.

Figure 3 is a top plan view of Figure 1.

Figure 4 is a fragmentary View of the so- -called ring-like base unit.

Referring-'to the drawingpthe customary fabs. ricated incandescent `.hood-,type mantle `is -de notedby the-numeral :5 rand is provldedfWitl-ifa conventional apertured crown- Ahaving ay hangeror-loop"6.i This is` adapted for releasableaeng.4

gagement with a' suspension hook'zl `on .thefintermediate orA bight portion ofthe U-sh'aped' frame 8..' This frame is adapted ffor. cooperation,-

with; the especially constructed self-adapting adjustable base or adapter unit.=9which, insoperation, functions as a retaining clamp;A This= part 9 is adapted.l to. associate. itself :satisfactorily withk different types ofy variablebases, not'shown, already existing-in lamp structures.`

caps, galleries, mantle.y frames, burners, circles,` rings, etc.

propriatentensila .strength .and resiliency. The

ring Qfasashown-:in Figure 1isiatnearly fits smallest diameter as it will appear in the ma- These base f members are: usually calledburner-cones, conei .a

Specifically, Vit comprises-a ring or:` annulus .characterized :by a scarf-jointIIl'v oan: expansible. and. contractible slip-type.; The ring.' or annulusis constructed from metal. of. anvapjority of lamps after installation. As manufactured, flanges I4 and I5 will show a larger open space at the scarf-joint. The sections of scarf-joint formed by ends of flange II will overlap at all times. When the ring is compressed to slip inside of another ring, existing in the lamp, the tendency of ring 9 is to expand,

thereby producing the necessary clamping action which aflixes it rmly in place. On another type of installation wherein the ring is forced to expand slightly to go around the out- I side of a base member, existing in certain lamps, the tendency is for ring 9 to contract to its original size and this also produces the desired clamping action. In other words, the diameter of ring 9 can be varied slightly by either compressing it to give a smaller diameter or expanding it to furnish a larger diameter. In both cases the ring is so constructedv as to tend to return to its original size and that is what furnishes the clamping action which holds it' This provides a satisfactory assemblage between the frame and base. The unit 9 may be said to be further characterized by a lower flange, that is, a flange I4 of a true circular type, and an upper flange I5 of an inwardly tapered or conical type. Or stated otherwise, we have in eiect a split ring or annuls which by the outwardly extending horizontal flange Il is divided itself into upper and lower complemental sections or flanges I5 and I4.

Novelty is thought to reside in one instance in the provision of the adjustable adapter unit or annulus S characterized by the bendable malleable features I3 susceptible of being transformed into sockets to accommodate the arm portions of the U-shaped frame 8. The essential novelty, however, has to do with the universal aspect of the unit 9 wherein it is susceptible of being operatively associated with different types of mantle supports or burner or mantle xtures such as are used in present day kerosene lamps. In the ordinary mantles in use on kerosene mantle lamps at present, the entire mantle assembly must be discarded when the mantle is fractured. This necessitates an excessively high retail price for replacement and places an unjust burden on the consumer. The mantle arrangement and frame structure herein described can be inserted into the old frame and effect a considerable saving for the user, since after the adapter structure is put in place, it is only necessary to buy the individual hood mantles.

In connection with the rib or ilange II forming a part of the unit 9, it is to be stated that this is adaptable as a reinforcing member. It will prevent distortion of the unit from excessive heat or rough handling and tend to keep the entire frame in its original shape. It also supplies some of the spring necessary to give the clamping action to ring 9. It also functions to control the distance between the mantle and the flame, thereby simplifying the installation of this improved universal mantle unit. It is to be noted,

also, that the upper ilange I5 slopes inward toward the correspondingly sloped surface of the mantle. The purpose of this angle is to present a larger area of the ring to the mantle, thereby lessening the possibility of breakage.

It is thought that the description taken in connection with the drawing will enable to clear understanding of the invention to be had. Therefore, a more lengthy description is thought unnecessary.

While the preferred embodiment of the invention has been shown and described, it is to be understood that minor changes coming within the eld of invention claimed may be resorted to if desired.

I claim:

l. A mantle support of the class described comprising a ring-shaped member formed of metal, with a split in the member providing a scarf joint, an outwardly extending flange 0n the member and connected therewith at the approximate center thereof, with the circumferentially extending part of the split passing through said i flange, an upright mantle supporting frame supported from the flange and supporting a mantle with the lower end thereof in the ring-shaped member. y

2. A mantle support of the class described comprising a ring-shaped member formed of metal, with a split in the member providing a scarf joint, an outwardly extending flange on the member and connected therewith at the approximate center thereof, with the circumferentially extending part of the split passing through said flange, an upright mantle supporting frame supported from the flange and supporting a mantle with the lower end thereof in the ring-shaped member, said portion of the ring-shaped member above the flange sloping upwardly and inwardly towards the mantle.

HARRY RINNMAN. 

